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Aqueous tape casting of the 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 ceramic films: Production optimization and properties
Journal of Electroceramics ( IF 1.7 ) Pub Date : 2021-06-12 , DOI: 10.1007/s10832-021-00240-z
Tomas Kudrevičius , Artyom Plyushch , Maksim Ivanov , Šarūnas Svirskas , Valentina Plaušinaitienė , Algirdas Selskis , Polina Kuzhir , Jūras Banys

The 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 ceramic films were prepared using the water-based tape casting method. Two main components of the slurry are water and solids. The concentrations of other chemicals, the surfactant and binder, are at the level of 1 wt.%. Both binder and surfactant are eco-friendly polymers. Additional chemicals are not required. The optimal concentration of surfactant determined through viscosity measurements. The density of the ceramics was studied as a function of the concentration of water and binder. The density is nearly independent of amount of water despite a wide range of values of concentration. This independence is a powerful tool to cast using different techniques. The density substantially depends only on binder concentration. The polymers removal protocol of the cast films was optimized using thermogravimetric analysis. As a result, the translucent ceramic films with a relative density of 98% and thickness of 70 μm were prepared. The permittivity, remnant polarization and pyrocurrent measurements, along with the scanning electron microscopy, prove the high density of the ceramics.



中文翻译:

0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3陶瓷薄膜的水性流延:生产优化和性能

0.7Pb(Mg 1/3 Nb 2/3 )O 3 -0.3PbTiO 3采用水性流延法制备陶瓷薄膜。浆液的两个主要成分是水和固体。其他化学品、表面活性剂和粘合剂的浓度为 1 wt.%。粘合剂和表面活性剂都是环保聚合物。不需要额外的化学品。通过粘度测量确定表面活性剂的最佳浓度。陶瓷的密度作为水和粘合剂浓度的函数进行研究。尽管浓度值范围很广,但密度几乎与水量无关。这种独立性是使用不同技术进行投射的强大工具。密度基本上仅取决于粘合剂浓度。使用热重分析优化流延膜的聚合物去除方案。因此,μ m制备。介电常数、剩余极化和热电流测量以及扫描电子显微镜证明了陶瓷的高密度。

更新日期:2021-06-13
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